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Unified Diff: conformance/textures/texture-mips.html

Issue 8342021: Add webgl conformance tests r15841. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/
Patch Set: Created 9 years, 2 months ago
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Index: conformance/textures/texture-mips.html
===================================================================
--- conformance/textures/texture-mips.html (revision 0)
+++ conformance/textures/texture-mips.html (revision 0)
@@ -0,0 +1,179 @@
+<!--
+Copyright (c) 2011 The Chromium Authors. All rights reserved.
+Use of this source code is governed by a BSD-style license that can be
+found in the LICENSE file.
+ -->
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>WebGL texture mips conformance test.</title>
+<link rel="stylesheet" href="../../resources/js-test-style.css"/>
+<script src="../../resources/js-test-pre.js"></script>
+<script src="../resources/webgl-test.js"> </script>
+<script src="../resources/webgl-test-utils.js"></script>
+</head>
+<body>
+<canvas id="example" width="2" height="2" style="width: 40px; height: 40px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+uniform vec4 uOffset;
+uniform vec4 uMult;
+attribute vec4 vPosition;
+attribute vec2 texCoord0;
+varying vec2 texCoord;
+void main()
+{
+ gl_Position = vPosition * uMult + uOffset;
+ texCoord = texCoord0;
+}
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+precision mediump float;
+uniform sampler2D tex;
+varying vec2 texCoord;
+void main()
+{
+ gl_FragColor = texture2D(tex, texCoord);
+}
+</script>
+<script>
+var canvas;
+function init()
+{
+ if (window.initNonKhronosFramework) {
+ window.initNonKhronosFramework(false);
+ }
+
+ debug("Checks mip issues");
+ debug("");
+
+ var wtu = WebGLTestUtils;
+ canvas = document.getElementById("example");
+ shouldBe("canvas.width", "2");
+ shouldBe("canvas.height", "2");
+
+ gl = wtu.create3DContext(canvas);
+ wtu.setupUnitQuad(gl, 0, 1);
+ var program = wtu.setupProgram(
+ gl,
+ [wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER),
+ wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER)],
+ ['vPosition', 'texCoord0'], [0, 1]);
+
+ gl.disable(gl.DEPTH_TEST);
+ gl.disable(gl.BLEND);
+
+ var blue = [0, 0, 255, 255];
+ var red = [255, 0, 0, 255];
+ var green = [0, 255, 0, 255];
+ var lightGreen = [128, 255, 192, 255];
+ var black = [0, 0, 0, 255];
+
+ var tex = gl.createTexture();
+ gl.bindTexture(gl.TEXTURE_2D, tex);
+ // 16x16 texture no mips
+ fillLevel(0, 16, lightGreen);
+ debug("mips: lightGreen(16x16), undef, undef, undef, undef");
+
+ var texLoc = gl.getUniformLocation(program, "tex");
+ gl.uniform1i(texLoc, 0);
+ var offLoc = gl.getUniformLocation(program, "uOffset");
+ var multLoc = gl.getUniformLocation(program, "uMult");
+
+ gl.uniform4f(offLoc, 0, 0, 0, 0);
+ gl.uniform4f(multLoc, 1, 1, 1, 1);
+
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, black,
+ "texture that is missing mips when " +
+ "TEXTURE_MIN_FILTER not NEAREST or LINEAR should draw with black");
+
+ gl.generateMipmap(gl.TEXTURE_2D);
+ debug("mips: lightGreen(16x16), lightGreen(8x8), lightGreen(4x4), lightGreen(2x2), lightGreen(1x1)");
+
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, lightGreen,
+ "texture that has all mips when should draw with light green");
+
+ // Fill in the bottom 2 mips with a different color.
+ fillLevel(4, 1, green);
+ fillLevel(3, 2, green);
+ debug("mips: lightGreen(16x16), lightGreen(8x8), lightGreen(4x4), green(2x2), green(1x1)");
+
+ // Choose the nearest mip
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
+
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, green,
+ "texture that is only using the smallest 2 mips should draw with green");
+
+ gl.uniform4f(multLoc, 16, 16, 1, 1);
+
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, lightGreen,
+ "texture that is using only the largest 2 mips should draw with light green");
+
+ // Set the top level
+ fillLevel(0, 1, red);
+ debug("mips: red(1x1), lightGreen(8x8-unused), lightGreen(4x4-unused), lightGreen(2x2-unused), lightGreen(1x1-unused)");
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, red,
+ "texture that is only using the top level even though other levels are defined " +
+ "should draw with red");
+
+ // Set the top 2 levels using generateMipmap
+ fillLevel(0, 2, blue);
+ debug("mips: blue(2x2), lightGreen(8x8-unused), lightGreen(4x4-unused), lightGreen(2x2-unused), lightGreen(1x1-unused)");
+ gl.generateMipmap(gl.TEXTURE_2D);
+ debug("mips: blue(2x2), blue(1x1), lightGreen(4x4-unused), lightGreen(2x2-unused), lightGreen(1x1-unused)");
+
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, blue,
+ "texture that is only using the top 2 levels even though other levels are defined " +
+ "should draw with blue");
+
+
+ // Set the top 2 levels back to sizes that end up using levels 2, 3, and 4 again.
+ fillLevel(0, 16, blue);
+ debug("mips: blue(16x16), blue(1x1), lightGreen(4x4-unused), lightGreen(2x2-unused), lightGreen(1x1-unused)");
+ fillLevel(1, 8, blue);
+ debug("mips: blue(16x16), blue(8x8), lightGreen(4x4), lightGreen(2x2), lightGreen(1x1)");
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, blue,
+ "texture that is only using the largest 2 mips should draw with blue");
+ gl.uniform4f(multLoc, 1, 1, 1, 1);
+ wtu.drawQuad(gl);
+ wtu.checkCanvas(gl, green,
+ "texture that is only using the smalles 2 mips should draw with green");
+
+
+ glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
+}
+
+function fillLevel(level, size, color) {
+ var numPixels = size * size;
+ var pixels = new Uint8Array(numPixels * 4);
+ for (var jj = 0; jj < numPixels; ++jj) {
+ var off = jj * 4;
+ pixels[off + 0] = color[0];
+ pixels[off + 1] = color[1];
+ pixels[off + 2] = color[2];
+ pixels[off + 3] = color[3];
+ }
+ gl.texImage2D(
+ gl.TEXTURE_2D, level, gl.RGBA, size, size, 0, gl.RGBA, gl.UNSIGNED_BYTE,
+ pixels);
+}
+
+init();
+successfullyParsed = true;
+</script>
+
+<script src="../../resources/js-test-post.js"></script>
+
+</body>
+</html>
+
Property changes on: conformance/textures/texture-mips.html
___________________________________________________________________
Added: svn:eol-style
+ LF
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